package com.v2d.document.service;

import com.v2d.document.config.AppProperties;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Service;

import java.net.URI;
import java.net.http.HttpClient;
import java.net.http.HttpRequest;
import java.net.http.HttpResponse;

@Service
public class ExternalApiService {
    private final Logger log = LoggerFactory.getLogger(ExternalApiService.class);
    private final AppProperties props;
    private final HttpClient http = HttpClient.newHttpClient();

    public ExternalApiService(AppProperties props) {
        this.props = props;
    }

    public String callProvider(String jsonPayload) {
        String key = props.getApiKey();
        if (key == null || key.isBlank()) {
            log.warn("External API key is not configured.");
            throw new IllegalStateException("External API key missing");
        }

        try {
            HttpRequest req = HttpRequest.newBuilder()
                    .uri(URI.create("https://api.example.com/endpoint")) // replace with real endpoint
                    .header("Authorization", "Bearer " + key)
                    .header("Content-Type", "application/json")
                    .POST(HttpRequest.BodyPublishers.ofString(jsonPayload))
                    .build();

            HttpResponse<String> resp = http.send(req, HttpResponse.BodyHandlers.ofString());
            return resp.body();
        } catch (Exception e) {
            log.error("External API call failed: {}", e.getMessage());
            throw new RuntimeException("External API call failed", e);
        }
    }
}